CN105044020A - Portable near-infrared fruit internal quality detection device with adjustable light spots - Google Patents
Portable near-infrared fruit internal quality detection device with adjustable light spots Download PDFInfo
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Abstract
The invention discloses a portable near-infrared fruit internal quality detection device with adjustable light spots. In a case, a light source part is installed on the right side of the case through a light source bracket; a detection unit is installed on the left side of the case through a detection bracket, and fruit is placed into a sample chamber in the detection unit by opening a lifting cover of the case; a rotary table of a rotary table mechanism is installed between the light source part and the detection unit; and a circuit board of a control processing unit is installed below the light source bracket, and an embedded computer of the control processing unit is installed on the upper surface of the case. The portable near-infrared fruit internal quality detection device disclosed by the invention adopts a halogen tungsten lamp as an original light source to emit a spectrum with continuous wavelength, spectral information at multiple wavebands can be acquired through optical fiber, and automatic collection of dark field, reference and fruit spectral information is achieved through the control of a steering engine on the rotary table; and the device is installed in the airtight case, so as to avoid the impact of external stray light on a detection process, and the case wall is provided with a heat dissipation fan and a heat dissipation hole, so as to ensure the temperature in the case, and improve the spectral acquisition efficiency and detection precision.
Description
Technical field
The present invention relates to portable fruit inside quality pick-up unit, especially relate to the Portable near infrared fruit internal quality pick-up unit that a kind of hot spot is adjustable.
Background technology
China's fruit total production is always at the forefront in the world in recent years, and due to processing in fruit postpartum and processing horizontal not high, fruit annual export volume only accounts for about 3% of total production, and the identity of this and Production of fruit big country of China is extremely unbecoming.Pol plays leading role to fruit quality, and it not only affects sweet taste and the color and luster of fruit, or the basic material of the nutritional labeling such as synthetic vitamin and carotenoid.There is destruction sample, complicated operation, length consuming time in current fruit internal quality analytical approach, cost is high and cannot realize the deficiencies such as on-line checkingi, therefore the quick checkout equipment researching and developing the fruit internal quality factors such as pol is for meeting the requirement of consumer to food quality and food security, improve marketable value and the market competitiveness of fruit product, increase farmers' income and be all significant.
Vis/NIR detection technique, owing to having fast, can't harm, is applied in the middle of portable checkout equipment, and can realize detecting in real time the harmless of fruit internal quality.
In Jap.P. JP09-089767, beam splitting system is adopted fruit reflected light to be divided into the monochromatic light of different wave length, utilize the absorbance at 912nm and the 888nm place after second differential process to predict the pol of fruit internal, can be used for the detection of orchard fruit quality, but beam-splitting structure is easily subject to the impact of the factor such as extraneous vibration and temperature, accuracy of detection is not high.
At home in patent 200910186328.6, LED light source in 620nm, 850nm, 880nm, 940nm tetra-is adopted to form combined light source, the fruit internal quality factors such as sugar degree, acidity, vitamin C are detected, it is little that this device has light source heat production, the advantages such as compact conformation, but owing to adopting LED light source power not high and the wavelength contained of LED light source that is combination is limited, this directly affects the effect of detection.
At home in patent 201310515353.0, adopt two groups of wavelength to be respectively 830nm, 866nm, 880nm, 889nm, 950nm, 965nm and 1020nm, 1115nm, 1270nm, 1332nm, 1381nm near infrared pipe detects the pol of navel orange and acidity as light source.This device has the small and exquisite advantage such as easy to operate, but the different parts being irradiated to fruit that the near infrared pipe fixed of wavelength is independent, the fruit information of acquisition is very limited, and different, and accuracy of detection is not high.
Summary of the invention
In order to overcome Problems existing in background technology, the Portable near infrared fruit internal quality pick-up unit that the object of the present invention is to provide a kind of hot spot adjustable, the hot spot forming different size meets the detection of dissimilar fruit quality, and utilize steering wheel to the control of rotating disk, automatically gather details in a play not acted out on stage, but told through dialogues information, reference spectrum and fruit spectrum successively, complete the detection to fruit internal quality.
The technical solution used in the present invention is as follows:
The present invention includes cabinet, the Lights section, rotating disk mechanism, detecting unit and controlled processing unit; In cabinet, the Lights section is arranged on the right side of cabinet by light source bracket; Detecting unit is arranged on the left of cabinet by Bracket for Inspection, opens the flip of cabinet, fruit is put into the sample chamber of detecting unit; The rotating disk of rotating disk mechanism is arranged between the Lights section and detecting unit; The circuit board of controlled processing unit is arranged on below light source bracket, and the embedded computer of controlled processing unit is arranged on the upper surface of cabinet; Control rotating disk mechanism and detecting unit by controlled processing unit, realize the automatic collection of reference spectrum, details in a play not acted out on stage, but told through dialogues spectrum and fruit spectral information, and pass to controlled processing unit and carry out Treatment Analysis, complete the detection of fruit quality.
Have the hole of installing embedded computer above described cabinet, the cabinet left side has louvre, and the cabinet right side has provided with fan and has louvre, provided with fan after cabinet, and flip is equipped with on the left side before cabinet.
Described the Lights section, comprises halogen tungsten lamp, halogen tungsten lamp mount pad, spotlight cylinder, biconvex lens and lens installing sleeve; Halogen tungsten lamp is powered by the Switching Power Supply of voltage constant, halogen tungsten lamp is fixed on the rear end face of spotlight cylinder by halogen tungsten lamp mount pad, biconvex lens scioptics installing sleeve to be arranged on before spotlight cylinder in sector hole, the Lights section integral installation is on light source bracket upper left side, the Lights section entirety can move left and right on support, regulates spot size.
Described rotating disk mechanism, comprises steering wheel, rotating disk, the first reference sheet, the second reference sheet and steering wheel connector; Steering wheel is arranged on below light source bracket by heat insulating washer, and be positioned at biconvex lens one end, rotating disk is provided with through hole, the first reference hole, the second reference hole and details in a play not acted out on stage, but told through dialogues and gathers position, four are evenly distributed on circumferentially same with 90 degree, interval, first reference sheet, the second reference sheet are arranged in the first reference hole, the second reference hole respectively, and steering wheel is connected with rotating disk by steering wheel connector.
Described detecting unit, comprises fruit tray seat, light receiver, O-ring seal, sample chamber, Bracket for Inspection, optical fiber and spectrometer; Have a shoulder hole in the middle of fruit tray seat, top is divided into conical bore, and bottom is divided into cylindrical hole, is fixed on Bracket for Inspection; Sample chamber is arranged on fruit tray seat upper end, and there is through hole sample chamber near light source side, and the center of sample chamber through hole, rotating disk through hole and spotlight cylinder is on same straight line; Fiber optic receiver is fixed on fruit tray seat lower cylindrical hole place, and optical fiber one end is connected with light receiver, and the other end is connected with spectrometer, and spectrometer is arranged on below light source bracket; The O-ring seal being applicable to fruit is installed in the conical bore at fruit tray seat center.
Described controlled processing unit: comprise circuit board and embedded computer; Embedded computer is arranged on the upper surface of cabinet; Circuit board is arranged on below light source bracket; Circuit board is connected with embedded computer, steering wheel and spectrometer respectively by signal wire; Embedded computer is connected with spectrometer by USB data line; The sequence circuit plate being installed on touch-screen embedded computer inside realizes rotating and the control of spectrometer triggering collection steering wheel; The spectra values of corresponding wavelength, after spectrometer acquisition spectral information, is read in the pol model existed in embedded computer, and is shown pol on embedded computer display screen by program by analysis that be installed on embedded computer inside; Whole controlled processing unit is powered by Switching Power Supply, and Switching Power Supply is opened by the shift knob being arranged on cabinet upper surface.
The beneficial effect that the present invention has is:
The present invention adopts halogen tungsten lamp to send the spectrum of continuous wavelength as original light source, directly can be obtained the spectral information of multiple wave band by optical fiber, and by the control of steering wheel to rotating disk, realizes the automatic collection of details in a play not acted out on stage, but told through dialogues information, reference information and fruit spectral information; Whole pick-up unit is installed in relatively airtight cabinet, external stray light can be avoided for the impact of testing process, cabinet wall is provided with radiator fan and louvre simultaneously, timely the heat that cabinet inside produces is distributed, ensure that temperature in chassis maintains normal level, improve spectra collection efficiency and accuracy of detection.
Accompanying drawing explanation
Fig. 1 is inner structure schematic diagram of the present invention.
Fig. 2 is the Lights section of the present invention, rotating disk mechanism, detecting unit structural representation.
Fig. 3 is fruit modes of emplacement schematic diagram of the present invention.
Fig. 4 is turntable structure schematic diagram of the present invention.
Fig. 5 is the structural representation after reference installed by rotating disk of the present invention.
Fig. 6 is that control module of the present invention controls schematic diagram.
In figure: 1, fruit; 2, O-ring seal; 3, fruit tray seat; 4, light receiver; 5, Bracket for Inspection; 6, optical fiber; 7, spectrometer; 8, light source bracket; 9, steering wheel connector; 10, steering wheel; 11, halogen tungsten lamp; 12, halogen tungsten lamp mount pad; 13, spotlight cylinder; 14, biconvex lens; 15, lens installing sleeve; 16, rotating disk; 17a, the first reference sheet; 17b, the second reference sheet; 18, sample chamber; 19 flips; 20, inserted computer; 21, cabinet; 22, handle; 23, fan guard; 24, louvre; 25, Switching Power Supply; 26, circuit board; 27, fan; 28, shift knob; 29, through hole; 30a, the first reference hole; 30b, the second reference hole; 31, details in a play not acted out on stage, but told through dialogues gathers position; 32, heat insulating washer.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further illustrated.
As shown in Figure 1, Figure 2, Figure 3 shows, the present invention includes cabinet 21, the Lights section, rotating disk mechanism, detecting unit and controlled processing unit; In cabinet 21, the Lights section is arranged on the right side of cabinet 21 by light source bracket 8; Detecting unit is arranged on the left of cabinet 21 by Bracket for Inspection 5, opens the flip 19 of cabinet 21, fruit is put into the sample chamber 18 of detecting unit; The rotating disk 19 of rotating disk mechanism is arranged between the Lights section and detecting unit; The circuit board 21 of controlled processing unit is arranged on below light source bracket 8, and the embedded computer 20 of controlled processing unit is arranged on the upper surface of cabinet 21; Control rotating disk mechanism and detecting unit by controlled processing unit, realize the automatic collection of reference spectrum, details in a play not acted out on stage, but told through dialogues spectrum and fruit spectral information, and pass to controlled processing unit and carry out Treatment Analysis, complete the detection of fruit quality.
As shown in Figure 1, Figure 2, Figure 3 shows, described cabinet 21 has the hole of installing embedded computer 20 above, cabinet 21 left side has louvre, cabinet 21 right side has installation two fans 27 and has louvre 24, cabinet 21 installs two fans 27 below, flip 19 is equipped with on the left side before cabinet 21, cabinet 21 left and right sides mounting knob 22.
As shown in Figure 1 and Figure 2, described the Lights section, comprises halogen tungsten lamp 11, halogen tungsten lamp mount pad 12, spotlight cylinder 13, biconvex lens 14 and lens installing sleeve 15; Halogen tungsten lamp 11 is powered by the Switching Power Supply 25 of voltage constant, halogen tungsten lamp 11 is fixed on the rear end face of spotlight cylinder 13 by halogen tungsten lamp mount pad 12, be through hole in spotlight cylinder 13, leading portion endoporus is threaded hole, and in the middle of spotlight cylinder 13, one section of outer wall has multiple heatsink flange; Lens installing sleeve 15 and spotlight cylinder 13 pass through thread connection, biconvex lens 14 scioptics installing sleeve 15 to be arranged on before spotlight cylinder 13 in sector hole, the Lights section integral installation is on light source bracket 8 upper left side, and the Lights section entirety can move left and right on support 8, regulates spot size.Switching Power Supply 25 forms a certain size a hot spot when opening, two fans 27 are equipped with at halogen tungsten lamp 11 side and the back side, outside the cabinet 21 of provided with fan 27 same position, fan guard 23 is housed, fan mode is outside exhausting, the heat that can be produced by halogen tungsten lamp 11 is timely discharged outside cabinet 21, cabinet 21 arranged on left and right sides bottom is respectively provided with louvre 24, forms air circulation, ensures heat radiation; The Lights section its right position overall is adjustable, and produce different large small light spot, the fruit being applicable to different cultivars detects, thin skin fruit small light spot, pachydermia fruit large spot.
As shown in Figure 1, Figure 2, shown in Fig. 4, Fig. 5, described rotating disk mechanism, comprises steering wheel 10, rotating disk 16, first reference sheet 17a, the second reference sheet 17b and steering wheel connector 9, steering wheel 10 is arranged on below light source bracket 8 by heat insulating washer 32, and be positioned at biconvex lens 14 one end, rotating disk 16 is provided with through hole 29, first reference hole 30a, second reference hole 30b and details in a play not acted out on stage, but told through dialogues gather position 31, four are evenly distributed on circumferentially same with 90 degree, interval, first reference sheet 17a, second reference sheet 17b is arranged on the first reference hole 30a respectively according to fixed angle, in second reference hole 30b, the reference sheet 17 of different performance can be the Teflon material of different-thickness, or the neutral density filter of different optical density, can change according to detection fruit type difference, steering wheel 10 is connected with rotating disk 16 by steering wheel connector 9.
Rotating disk 16, by servos control, is controlled to rotate at a certain angle by controlled processing unit, and when rotation gathers position 31 to details in a play not acted out on stage, but told through dialogues, spotlight cylinder 13 front end is blocked by rotating disk 16, and halogen tungsten lamp 11 light is blocked, and now detecting unit gathers details in a play not acted out on stage, but told through dialogues spectrum; When rotating disk 16 rotates the first reference sheet 17a to different performance, second reference sheet 17b one of them, make the first corresponding reference sheet 17a, second one of them center of reference sheet 17b and spotlight cylinder 13 center point-blank, light therethrough reference first reference sheet 17a, the second reference sheet 17b, detecting unit can obtain corresponding reference spectrum, when rotating disk 16 rotates to through hole 29 place, light is directly irradiated to fruit 1 through through hole 29, and detecting unit can obtain fruit spectral information.
As shown in Figure 1 and Figure 2, described detecting unit, comprises fruit tray seat 3, light receiver 4, O-ring seal 2, sample chamber 18, Bracket for Inspection 5, optical fiber 6 and spectrometer 7; Have a shoulder hole in the middle of fruit tray seat 3, top is divided into conical bore, and bottom is divided into cylindrical hole, is fixed on Bracket for Inspection 5; Sample chamber 18 is arranged on fruit tray seat 3 upper end, and there is through hole sample chamber 18 near light source side, and the center of sample chamber 18 through hole, rotating disk 16 through hole and spotlight cylinder 13 is on same straight line; Fiber optic receiver 4 is fixed on fruit tray seat 3 lower cylindrical hole place, and optical fiber 6 one end is connected with light receiver 4, and the other end is connected with spectrometer 7, and spectrometer 7 is arranged on below light source bracket 8; The O-ring seal 2 being applicable to fruit is installed in the conical bore at fruit tray seat 3 center.O-ring seal 2 is made up of the rubber that elasticity is good, and when fruit 1 is put into on fruit tray seat 3, fitting completely in O-ring seal 2 and fruit 1 surface, can prevent extraneous light from entering light receiver 4 and affecting accuracy of detection.
As shown in Fig. 2, Fig. 3, Fig. 6, described controlled processing unit: comprise circuit board 26 (model is AT89S52) and embedded computer 20; Embedded computer 20 is arranged on the upper surface of cabinet 21; Circuit board 26 is arranged on below light source bracket 8; Circuit board 26 is connected with embedded computer 20, steering wheel 10 and spectrometer 7 respectively by signal wire; Embedded computer 20 is connected with spectrometer 7 by USB data line; The sequence circuit 26 being installed on touch-screen embedded computer 20 inside realizes rotating steering wheel 10 and the control of spectrometer 7 triggering collection, and wherein steering wheel 10 rotates 0 °, spectrometer collection details in a play not acted out on stage, but told through dialogues spectrum, is " collection details in a play not acted out on stage, but told through dialogues " pattern; Steering wheel 10 half-twist and 180 °, spectrometer gathers reference spectrum respectively, is " collection reference " pattern; Steering wheel 10 rotates 270 °, spectrometer collection fruit spectrum, is " collecting fruit " pattern; After the program being installed on embedded computer 20 inside obtains spectral information from spectrometer 7, by analysis the spectra values of corresponding wavelength is read in the pol model existed in embedded computer 20, and on embedded computer 20 display screen, pol is shown; Whole controlled processing unit is powered by Switching Power Supply 25, and Switching Power Supply 25 is opened by the shift knob 28 being arranged on cabinet 21 upper surface.
Described pol model is: SC=11.935-10.233A
616.4+ 113.366A
663.7+ 44.969A
670.5-295.799A
675.1+ 177.825A
680.4-71.823A
725-102.185A
731+ 209.669A
757.4-144.954A
787.3+ 113.146A
802.3+ 40.903A
822.4-91.644A
864-40.546A
886.9+ 56.578A
900.1
In formula, A
λfinger is the fruit absorbance at λ place at wavelength.
Below to detect apple sugar content, specifically set forth operating process:
Connect pick-up unit power supply, press power switch button, pick-up unit starts, and after preheating half an hour, starts spectra collection and pol trace routine, chooses spectra collection integral time; The first step is pressed " collection details in a play not acted out on stage, but told through dialogues ", and circuit board automatically controls steering wheel and rotates to details in a play not acted out on stage, but told through dialogues position on rotating disk, and the pulse signal sending 5V triggers spectrometer collection details in a play not acted out on stage, but told through dialogues spectrum; Second step is pressed " collection reference ", and circuit board automatically controls steering wheel and rotates to reference position on rotating disk, and the pulse signal sending 5V triggers spectrometer collection reference spectrum; Fruit is put into pick-up unit inside from flip by the 3rd step, build flip, press " collecting fruit ", circuit board automatically controls steering wheel and rotates to through hole position on rotating disk, halogen tungsten lamp light source is converged from the outgoing of spotlight cylinder by biconvex lens, through hole on rotating disk, light source injects apple, the spectrum being loaded with fruit internal quality information penetrates from bottom, undertaken converging and receiving by the light receiver being arranged on fruit tray seat center, then pass to by optical fiber the collection that spectrometer completes fruit spectral information under circuit board triggers; Spectrometer often gathers a spectroscopic data, inserted computer is transferred data to by USB interface, spectroscopic data process is completed in computer program, and the fruit spectra values under extracting characteristic wavelength, call in existing pol model, obtain corresponding pol value and show on inserted computer display screen.
Described inserted computer, light receiver and spectrometer etc. all can commercially be chosen.
Above-mentioned embodiment is used for explaining and the present invention is described, instead of limits the invention, and in the protection domain of spirit of the present invention and claim, any amendment make the present invention and change, all fall into protection scope of the present invention.
Claims (6)
1. the Portable near infrared fruit internal quality pick-up unit that hot spot is adjustable, is characterized in that: comprise cabinet (21), the Lights section, rotating disk mechanism, detecting unit and controlled processing unit; In cabinet (21), the Lights section is arranged on cabinet (21) right side by light source bracket (8); Detecting unit is arranged on cabinet (21) left side by Bracket for Inspection (5), opens the flip (19) of cabinet (21), fruit is put into the sample chamber (18) of detecting unit; The rotating disk (19) of rotating disk mechanism is arranged between the Lights section and detecting unit; The circuit board (21) of controlled processing unit is arranged on below light source bracket (8), and the embedded computer (20) of controlled processing unit is arranged on the upper surface of cabinet (21); Control rotating disk mechanism and detecting unit by controlled processing unit, realize the automatic collection of reference spectrum, details in a play not acted out on stage, but told through dialogues spectrum and fruit spectral information, and pass to controlled processing unit and carry out Treatment Analysis, complete the detection of fruit quality.
2. the Portable near infrared fruit internal quality pick-up unit that a kind of hot spot according to claim 1 is adjustable, it is characterized in that: described cabinet (21) has the hole of installing embedded computer (20) above, cabinet (21) left side has louvre, cabinet (21) right side has provided with fan and has louvre, cabinet (21) is provided with fan below, and flip (19) is equipped with on the left side before cabinet (21).
3. the Portable near infrared fruit internal quality pick-up unit that a kind of hot spot according to claim 1 is adjustable, it is characterized in that: described the Lights section, comprise halogen tungsten lamp (11), halogen tungsten lamp mount pad (12), spotlight cylinder (13), biconvex lens (14) and lens installing sleeve (15); Halogen tungsten lamp (11) is powered by the Switching Power Supply (25) of voltage constant, halogen tungsten lamp (11) is fixed on the rear end face of spotlight cylinder (13) by halogen tungsten lamp mount pad (12), biconvex lens (14) scioptics installing sleeve (15) is arranged in spotlight cylinder (13) front sector hole, the Lights section integral installation is on light source bracket (8) upper left side, the Lights section entirety can move left and right on support (8), regulates spot size.
4. the Portable near infrared fruit internal quality pick-up unit that a kind of hot spot according to claim 1 is adjustable, it is characterized in that: described rotating disk mechanism, comprise steering wheel (10), rotating disk (16), the first reference sheet (17a), the second reference sheet (17b) and steering wheel connector (9); Steering wheel (10) is arranged on below light source bracket (8) by heat insulating washer (32), and be positioned at biconvex lens (14) one end, rotating disk (16) is provided with through hole (29), the first reference hole (30a), the second reference hole (30b) and details in a play not acted out on stage, but told through dialogues and gathers position (31), four are evenly distributed on circumferentially same with 90 degree, interval, first reference sheet (17a), the second reference sheet (17b) are arranged in the first reference hole (30a), the second reference hole (30b) respectively, and steering wheel (10) is connected with rotating disk (16) by steering wheel connector (9).
5. the Portable near infrared fruit internal quality pick-up unit that a kind of hot spot according to claim 1 is adjustable, it is characterized in that: described detecting unit, comprise fruit tray seat (3), light receiver (4), O-ring seal (2), sample chamber (18), Bracket for Inspection (5), optical fiber (6) and spectrometer (7); Have a shoulder hole in the middle of fruit tray seat (3), top is divided into conical bore, and bottom is divided into cylindrical hole, is fixed on Bracket for Inspection (5); Sample chamber (18) is arranged on fruit tray seat (3) upper end, and sample chamber (18) have through hole near light source side, and the center of sample chamber (18) through hole, rotating disk (16) through hole and spotlight cylinder (13) is on same straight line; Fiber optic receiver (4) is fixed on fruit tray seat (3) lower cylindrical hole place, and optical fiber (6) one end is connected with light receiver (4), and the other end is connected with spectrometer (7), and spectrometer (7) is arranged on light source bracket (8) below; The O-ring seal (2) being applicable to fruit is installed in the conical bore at fruit tray seat (3) center.
6. the Portable near infrared fruit internal quality pick-up unit that a kind of hot spot according to claim 1 is adjustable, is characterized in that: described controlled processing unit: comprise circuit board (26) and embedded computer (20); Embedded computer (20) is arranged on the upper surface of cabinet (21); Circuit board (26) is arranged on light source bracket (8) below; Circuit board (26) is connected with embedded computer (20), steering wheel (10) and spectrometer (7) respectively by signal wire; Embedded computer (20) is connected with spectrometer (7) by USB data line; Be installed on the inner sequence circuit plate (26) of touch-screen embedded computer (20) to realize rotating steering wheel (10) and the control of spectrometer (7) triggering collection; Be installed on the inner program of embedded computer (20) after spectrometer (7) acquisition spectral information, by analysis the spectra values of corresponding wavelength is read in the pol model existed in embedded computer (20), and on embedded computer (20) display screen, pol is shown; Whole controlled processing unit is powered by Switching Power Supply (25), and Switching Power Supply (25) is opened by the shift knob (28) being arranged on cabinet (21) upper surface.
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| CN108088816A (en) * | 2018-01-23 | 2018-05-29 | 深圳市国赛生物技术有限公司 | Small-sized specific protein analyzer |
| CN108318443A (en) * | 2018-01-23 | 2018-07-24 | 黑龙江大学 | Apple sugar content near-infrared detection apparatus based on multi-feature wavelength and its detection method |
| CN109001134A (en) * | 2018-09-14 | 2018-12-14 | 南京林业大学 | Contactless multi-path fruit Inner Defect Testing system and method |
| CN109580521A (en) * | 2019-01-21 | 2019-04-05 | 浙江创谱科技有限公司 | A kind of infrared spectroscopy food detector |
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